Not wanting to defend the attendant who was over the limit for flight crew and has rightly been disciplined, but the article is a bit hysterical in tone.
71mg is 71 milligrams not 71 micrograms as stated in the article. 71 micrograms (mcg) is 0.071 milligrams which is a tiny amount of alcohol in 100 millilitres of blood.
71mg per 100ml of blood is slightly under eight times the 9mg limit for flight crew, but is still less than the drink driving limit in England of 80mg per 100ml of blood.
JonM : I think you are perhaps unaware that in the UK blood levels are no longer the standard. It is breath levels which are the criterion, and the limit for driving is 35mcg( and for acting as aircrew 9 mcg). So she was nearly 8 times the aircrew limit, and just over double the driving limit. The article correctly reported the units
However the first time the article states the result it says 71 micrograms but further on it quotes a lawyer as saying the result was 71mg. mg being the abreviation for milligrams not micrograms which are mcg.
Still my mistake. I should have realised that they were decribing breath readings not blood readings. She was twice the English drink drive limit and eight times the flight crew limit.